a high-end graphing calculator from Texas Instruments capable of 3D graphing, computing definite and indefinite integrals and derivates among with numerous useful features.
a: did you get that second problem from last night's homework?
b: yea, of course.
a: how? we didn't learn how to integrate logarithmic functions yet!
b: we didn't but my ti89 did!
a: you bastard!
b: yea, of course.
a: how? we didn't learn how to integrate logarithmic functions yet!
b: we didn't but my ti89 did!
a: you bastard!
by alperthereal February 10, 2004
Get the ti89 mug.The Holy Grail of Calculators. This baby can do everything from calculate how much you need to tip your lovely waitress to graph a complicated integral that even your Calculus teacher will be amazed by. O and don't worry it can do much, much more. Too much, that a normal human could never actually figure out all it's features in an entire lifetime. It is the Ultimate / Only friend of an Engineering Major.
Kim : I looked up Calculator in the dictionary the other day, and it wasn't defined!
Tom: What do you mean?
Kim: All it said was: See Ti89.
Tom: What do you mean?
Kim: All it said was: See Ti89.
by KBUR August 10, 2008
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